*{ 
    padding: 0;
    margin: 0;
    box-sizing: border-box;
}
@font-face{ 
    font-family: cas;
    src: url(../font/cas.otf) format("opentype");
}
body{ 
    background-color: #000;
    min-height: 1500px;
    font-family: 'Oswald', cas;
}
nav{ 
    min-width: 60px;
    transition: 0.8s;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    a{ 
        /*[data-darkreader-inline-fill] {*/
            /*fill: var(--darkreader-inline-fill) !important;*/
        /*}*/
        svg{ 
            height: 40px;
            margin: 10px;
            width: 40px;
        }
    }
    ul{ 
        float: right;
        width: 40%;
        list-style-type: none;
        li{ 
            margin-left: 60px;
            line-height: 60px;
            display: inline-block;
            a{ 
                color: white;
                font-size: 18px;
                text-decoration: none;
                text-transform: uppercase;
            }
        }
    }   
}
nav.sticky{ 
    transition: 0.8s;
    background-color: white;
    ul{ 
        li{ 
            a{ 
                color: #1e90ff;
            }
        }
    }
}
div.button{ 
    min-height: 1000px;
    width: 100%;
    display: flex;
    justify-content: center;
    align-items: center;
    a{ 
        color: #ffffff;
        position: relative;
        text-decoration: none;
        display: inline-block;
        font-size: 20px;
        padding: 10px 60px;
        transition: 1s;
        overflow: hidden;
        text-transform: uppercase;
        span:nth-child(1){ 
            position: absolute;
            height: 2px;
            width: 200%;
            top: 0;
            left: -300%;
            background: linear-gradient(90deg, transparent, #2ed573);
        }
        span:nth-child(2){ 
            position: absolute;
            width: 2px;
            height: 200%;
            right: 0;
            top: -200%;
            background: linear-gradient(180deg, transparent, #2ed573);
        }
        span:nth-child(3){ 
            position: absolute;
            height: 2px;
            width: 200%;
            bottom: 0;
            left: 200%;
            background: linear-gradient(270deg, transparent, #2ed573);
        }
        span:nth-child(4){ 
            position: absolute;
            width: 2px;
            height: 200%;
            top: 100%;
            left: 0;
            background: linear-gradient(0deg, transparent, #2ed573);
        }
    }
    a:hover{ 
        background-color: #2ed573;
        letter-spacing: 4px;
        font-size: 24px;
        transition: 1s;
        transition-delay: 0.2s;
        box-shadow: 0 0 10px #2ed573, 0 0 40px#2ed573, 0 0 80px #2ed573;
        span:nth-child(1){ 
            left: 200%;
            transition: 1s;
        }
        span:nth-child(2){ 
            top: 200%;
            transition: 1s;
        }
        span:nth-child(3){ 
            left: -200%;
            transition: 1s;
        }
        span:nth-child(4){ 
            top: -300%;
            transition: 1s;
        }
    }
}
